CVE-2022-42012: An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2

Q: How do I fix CVE-2022-42012?

dbus: upgrade to 1.12.24, 1.14.4, 1.15.2; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2022-42012 being exploited?

CVE-2022-42012 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-42012 affect?

CVE-2022-42012 affects dbus, fedora. Severity is medium (CVSS 6.5). An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2. An authenticated attacker can cause dbus-daemon and other programs that use libdbus to crash by sending a message with attached file

Q: How urgent is CVE-2022-42012?

Priority 47/100. Public exploit reference

This month

MEDIUM 6.5UPGRADEMITIGATE

CVE-2022-42012 is a medium-severity flaw (CVSS 6.5) affecting dbus, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2. An authenticated attacker can cause dbus-daemon and other programs that use libdbus to crash by sending a message with attached file descriptors in an unexpected format.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.8% (top 22%)
CISA exploited list	No
Weakness	CWE-20
Published	2022-10-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fedoraproject · freedesktop

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-10-10 00:15 UTCPublished CVE record published
2026-06-17 05:04 UTCUpdated Record last modified

freedesktop dbus UPGRADE

Affected: < 1.12.24 · >= 1.13.0 and < 1.14.4 · >= 1.15.0 and < 1.15.2

Fixed in: 1.12.24, 1.14.4, 1.15.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dbus || rpm -q dbus || dbus --version

2. UPGRADE to 1.12.24 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dbus

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dbus

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

fedoraproject fedora MITIGATE

Affected: 35 · 36 · 37

Fixed in: no fixed release known

Safe to downgrade to: a release before 35

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-42012?

dbus: upgrade to 1.12.24, 1.14.4, 1.15.2; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-42012 being exploited?

CVE-2022-42012 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-42012 affect?

CVE-2022-42012 affects dbus, fedora. Severity is medium (CVSS 6.5). An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2. An authenticated attacker can cause dbus-daemon and other programs that use libdbus to crash by sending a message with attached file

How urgent is CVE-2022-42012?

Priority 47/100. Public exploit reference

Related CVEs

CVE-2023-34969 MEDIUM 6.5 UPGRADE MITIGATE D-Bus before 1.15.6 sometimes allows unprivileged users to crash dbus-daemon
CVE-2022-42011 MEDIUM 6.5 UPGRADE MITIGATE An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2
CVE-2022-42010 MEDIUM 6.5 UPGRADE MITIGATE An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2
CVE-2020-35512 HIGH 7.8 MITIGATE A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18,
CVE-2020-12049 MEDIUM 5.5 UPGRADE MITIGATE An issue was discovered in dbus >= 1.3.0 before 1.12.18

References

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